Does gold reset each reign in Game of Thrones: Dragonfire?

No, gold never resets. It's the only permanent currency among your resources, alongside your dragons and everything attached to them (relics, stars, Habits, keys).

That changes how you handle it entirely:

• Basic resources (wood, stone, iron, food) and Meat reset → spend them inside the reign
• Gold doesn't reset → stockpile it and invest it in permanent things

Concretely, at the end of a reign, if you're torn between burning gold or resources: burn the resources (they're about to vanish anyway) and keep your gold for the new season or for one big permanent move — relics for a key Legendary, Cores, chest keys.